Calculate the change of enthalpy for the reaction N2 + O2 --> 2NO from the following reactions: Reaction 1: 4NH3 + 3O2 --> 2N2 + 6H2O Change in enthalpy: -1530 kJ

Reaction 2: 4NH3 + 5O2 --> 4NO + 6H2O Change in enthalpy: -1170 kJ

Reaction 3: 2N2 + 6H2O --> 4NH3 + 3O2 Change in enthalpy: +1530 kJ
Include the following:
-The numerical answer with correct units.
-State which reactions, if any, you had to "Flip".
-State which reactions you had to multiply, if any, to get the correct amount of the compound. Also, include how much you multiplied the reaction by.

Tilt your head back and allow your mouth to hang open widely.

Contract the back of the throat and breathe deeply through your mouth.

Inhale and exhale completely while relaxing the shoulders.

When the yawn comes “reach and extend into it” to stretch the jaw muscles.

Explanation:

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

the answer is 75.0%.